160 COLOMBIAN DERMAPTERA AND ORTHOPTERA 



evenly convex, slightly flaring, cingulate to distal margin which is feeblj' con- 

 cave, ventral surface of distal margin thickened on each side, transversely sub- 

 bilobate ventrad, with surface heavily armed with minute spines. Cerci slen- 

 der, elongate, straight to the roundly enlarged apices which are bent inward. 

 Mesosternum and metasternum with a heavy, glabrous, microscopically pitted, 

 medio-longitudinal carina. Seventh ventral abdominal segment over half as 

 long as sixth, enlarging somewhat caudad. Subgenital plate (eighth ventral 

 abdominal segment) of equal diameter throughout and of almost equal depth 

 throughout, ventral length twice depth; proximal portion convex in transverse 

 section, distal portion convex, in outline sharplj^ ascendant, from a very 

 minute, transverse, ventro-mesal node directed caudad, to the free dorsal mar- 

 gin which is moderately thickened and forms part of a narrow oval.^-* Limbs 

 very elongate, strongly carinate and compressed, unarmed. The caudal femora 

 reach to near base of sixth abdominal segment. Metatarsus very elongate, the 

 combined length of the succeeding joints only three-quarters its length. 



Length of body, 101; head, 4; pronotum, 3; mesonotum, 28.7; metanotum, 

 including median segment, 17.2; median segment, 8.2; ninth (distal) dorsal 

 abdominal segment, 1.9; poculum, 3.7; cephalic femur, 39.2; median femur, 

 30.8; caudal femur, 37.7; caudal tibia, 44; caudal metatarsus, 8.7 mm. Width 

 of mesonotum, 1.2; abdomen at poculum (greatest), 2. Depth of poculum, 

 2 mm. 



General coloration brownish olive; limbs darker, particularly toward the 

 genicular regions; the femora and tibiae all broadly tri-annulate with bufTy, 

 these annuli suffused; tarsi buffy. 



In addition to the type, a paratypic niale, bearing the same 

 data but taken in January, 1909, is before us. 



A badly preserved female, apparently two or three instars 

 removed from maturity, from the same locality, taken July 25, 

 1908, is at hand. 



This specimen is apparently the same species, the relative pro- 

 portions all agreeing as closely as would be expected for the sexes. 

 The head has two small conical occipital spines (length, 1.3 mm., 

 more decided and approximate than in Costa Rican females of 

 B. jugalis Rehn, at hand) and laterad of these a niinute conical 

 spine toward each eye, the occipital surface is smooth, supplied 

 with twelve abrupt, rounded, minute nodes. The mesonotum and 

 metanotum are almost perfectly smooth, showing a few, widely 

 scattered, weakly defined nodules laterad. The otherwise smooth 

 pleura and sterna are supplied with more numerous, but widely 



'*'' In incomptd the sides of tlie eighth dorsal abdominal segment are more 

 projecting, wider, though not i)roduced, the seventh ventral .segment widens 

 more strongly and the broader subgenital plate is more decidedly deflexed, the-se 

 features making the distal portion of the abdomen of that species much heavier 

 and more strongly clubbed. 



